Nitrogen, Oxygen and Cobalt multiple-doped graphitized mesoporous carbon as a cost-effective carbon host with high sulfur content for lithium-sulfur batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Yinglin Xiao
  • Yi Zeng
  • Hongbo Zeng
  • Bingbing Tian
  • Yonghong Deng

Detail(s)

Original languageEnglish
Pages (from-to)1356-1364
Journal / PublicationJournal of Alloys and Compounds
Volume787
Early online date4 Feb 2019
Publication statusPublished - 30 May 2019

Abstract

The development of facile, inexpensive and large-scale methods to prepare carbon scaffolds with high sulfur content is crucial to the practical applications of Li-S Battery. Herein, Nitrogen, Oxygen and Cobalt multiple-doped graphitized mesoporous carbon sulfur composites (N-O-Co-C/S) with high sulfur content (90%) are developed via inexpensive carbonization methods. The composites exhibit superior performance with a capacity of 610 mAh g−1 at a current of 0.5 C after 200 cycles and 302 mAh g−1 at a current of 2 C after 1400 cycles. The superior performance of N-O-Co-C/S composites can be attributed to the enhanced electrical conductivity and ionic conductivity of Co-N-O-C/S composites, which can be supported by electrochemical impedance spectroscopy measurement. The polysulfide-trapping was mainly attributed to the strong O-S, N-S and Co-S interactions, thus improving the e electrochemical performance.

Research Area(s)

  • Graphitized carbon, Lithium-sulfur batteries, Mesoporous carbon, Multiple-doped

Citation Format(s)

Nitrogen, Oxygen and Cobalt multiple-doped graphitized mesoporous carbon as a cost-effective carbon host with high sulfur content for lithium-sulfur batteries. / Xiao, Yinglin; Zeng, Yi; Zeng, Hongbo; Zhang, Wenjun; Tian, Bingbing; Deng, Yonghong.

In: Journal of Alloys and Compounds, Vol. 787, 30.05.2019, p. 1356-1364.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review